Feeler, Radius & Thread Gauges
- 1-16mm or 15-30mm models
- Inch on the reverse side
- Clearly etched graduations
- 1.0mm & 0.5mm both sides
- Tempered steel
- Satin chrome finish
- Internal & external screw threads
- Locking device at each end
- Metric & imperial models
- Penknife style
- Unified and Whitworth thread profiles
- 17 External and 17 Internal Leaves
- Total Range: 1-7mm
- 1-3mm in 0.25mm steps
- 3-7mm in 0.5mm steps
- M3 x 0.5mm up to M20 x 2.5mm, or M3-M12 set
- ISO Threads
- 6H Tolerance
- Red band on NO-GO end
- NO-GO Thin body & Surface hole
- GO & NO-GO options
- M3 x 0.5mm to M20 x 2.5mm & 7 Piece Sets
- Cylindrical, 2” in length
- Metric & Imperial options
- Fully hardened to 60-62 RC
- Metric or Imperial
- Penknife style
- Each blade is marked with its size
About Feeler, Radius & Thread Gauges
A feeler gauge consists of several thin blades for measuring narrow gaps or clearances, mostly in engineering to measure the clearance between two parts.
A radius gauge, also known as a fillet gauge, is a tool used to measure the radius of an object. It is a hand-held tool with many precision rounded curves (radii) machined into its edges.
A thread gauge checks the dimensions of a specific thread form angle, pitch, and diameter. They are a reference tool in determining the pitch of a thread on a screw or in a tapped hole.